外显和内隐情绪韵律加工的脑机制:近红外成像研究  

The brain mechanism of explicit and implicit processing of emotional prosodies:An fNIRS study

作　　者：雷震[1] 毕蓉 莫李澄 于文汶 张丹丹 LEI Zhen;BI Rong;MO Licheng;YU Wenwen;ZHANG Dandan(China Center for Behavioral Economics and Finance&School of Economics,Southwestern University of Finance and Economics,Chengdu 611130,China;College of Psychology,Shenzhen University,Shenzhen 518060,China)

机构地区：[1]西南财经大学中国行为经济与行为金融研究中心,成都611130 [2]深圳大学心理学院,深圳518060

出　　处：《心理学报》2021年第1期15-25,共11页Acta Psychologica Sinica

基　　金：国家自然科学基金(31970980);深圳市基础研究自由探索项目(JCYJ20180305124305294);深港脑科学创新研究院(2019SHIBS0003);教育部人文社会科学研究规划基金项目(16XJA790004)支持。

摘　　要：准确识别言语中的情绪韵律信息对社会交往非常重要。本研究采用功能近红外成像技术,探索外显和内隐情绪加工条件下愤怒、恐惧、快乐三种情绪韵律加工过程中的大脑皮层神经活动。结果表明,对愤怒、恐惧、快乐韵律进行特异性加工的脑区分别为左侧额极/眶额叶、右侧缘上回、左侧额下回,其中右侧缘上回脑区同时受到情绪和任务的调控。此外,右侧颞中回、颞下回和颞极在情绪外显任务中的激活明显强于内隐任务。本研究的结果部分支持了情绪韵律的层次模型,也对该模型的第三层次,即“额区对语音情绪信息的精细加工需要外显性情绪加工任务参与”提出了质疑。Emotional expressions of others embedded in speech prosodies are important for social interactions.Affective prosody refers to a way to express and convey emotions through the dynamic changes of various acoustic cues such as pitch,intensity,stress,and intonation in speech,without relying on vocabulary and grammatical structure.Previous studies have shown that STC,IFG,OFC,and other cerebral cortex and subcortical structures are involved in emotional prosody processing,and gradually formed a hierarchical model.However,existing studies on the neural mechanism of emotional prosody processing mostly focus on the difference between non-neutral emotional prosody and neutral prosody,while the comparison between various non-neutral emotional prosody is less investigated.Besides,the differences involved in brain regions of emotional prosody processing under explicit and implicit tasks are still not clear.Furthermore,it is necessary to further accumulate experimental evidence based on noise-free brain imaging technology,such as the noise-free features of fNIRS are especially suitable for speech processing research.This study used functional near-infrared spectroscopy to investigate how speech prosodies of different emotional categories are processed in the cortex under different task conditions.A group of 25 college students participated in this study with a 3(emotion:anger vs.fearful vs.happy)by 2(task focus:explicit vs.implicit)within-participant factorial design.We manipulated task focus by adopting two different tasks,with emotional discrimination task as explicit condition and sex discrimination task as implicit condition.Ten phonological materials for each of anger,fearful,and happy prosody were selected from the Chinese Speech Emotion Database and consisted of the corresponding emotional prosodies and neutral prosodies.The emotional explicit task was to count the emotional and neutral sentences contained in each 10-second speech,and the emotional implicit task was to count the sentences played by two women in each 10

关 键 词：情绪 语音韵律 颞上回 眶额叶 额下回 缘上回 

分 类 号：B842[哲学宗教—基础心理学] B845[哲学宗教—心理学]